The Siemens 6SN1121-0BA11-0AA1 is a SIMODRIVE 611-A plug-in closed-loop control unit for main spindle drives with 1PH motors, universal version. In the analog SIMODRIVE 611-A system it performs the closed-loop speed and current control of the spindle, taking an analog setpoint from the CNC or machine control.
It is a service spare for analog SIMODRIVE 611 spindle installations on legacy CNC machine tools.
Technical Specifications
Series
SIMODRIVE 611-A (analog)
Type
Plug-in closed-loop control unit, main spindle drive
Motor type
1PH main spindle motors
Version
Universal
Setpoint interface
Analog
Format
Plug-in unit for SIMODRIVE 611 power module
Eligible for next day delivery
Orders placed before 4 PM ET ship same day for rapid replacement, minimizing downtime.
Extend your warranty coverage at checkout2 yrs included free
Pricing for this item — you’ll pick a term on the checkout page.
Extended plans are available at checkout on items $200 and up.
+1 yr → 3 total$634/yr$633.90 · thru 2029
+3 yrs → 5 total$563/yr$1,690.40 · thru 2031
+5 yrs → 7 total$423/yr$2,113.00 · thru 2033
BEST VALUE+8 yrs → 10 total$317/yr$2,535.60 · thru 2036
Full defect protection · free RMA evaluation & repair · same‑day replacement when in stock
Description
The Siemens 6SN1121-0BA11-0AA1 is a SIMODRIVE 611-A plug-in closed-loop control unit for main spindle drives with 1PH motors, universal version. In the analog SIMODRIVE 611-A system it performs the closed-loop speed and current control of the spindle, taking an analog setpoint from the CNC or machine control.
It is a service spare for analog SIMODRIVE 611 spindle installations on legacy CNC machine tools.
Technical Specifications
Series
SIMODRIVE 611-A (analog)
Type
Plug-in closed-loop control unit, main spindle drive
Motor type
1PH main spindle motors
Version
Universal
Setpoint interface
Analog
Format
Plug-in unit for SIMODRIVE 611 power module
Part Number Breakdown
Part number reference — 6SN1121-0BA11-0AA1
SIMODRIVE 611-A PLUG-IN CLOSED-LOOP CONTROL UNIT, FOR MAIN SPINDLE DRIVES WITH 1PH, UNIVERSAL VERSION
Official Siemens catalog description.
Questions or need a quote? Call 877-727-8757 or email sales@iac.us.com.
Send in your item for a free evaluation and repair quote. Use our RMA form or email a repair request to service@iac.us.com , and we will contact you to assess your situation and offer shipping information.
Technical Support
Need help with installation, configuration, or troubleshooting? Our technical experts are available to assist you.
Industrial Automation Co. is a premier supplier of replacement and aftermarket industrial components. In addition to the 6SN1121-0BA11-0AA1, we offer hundreds of Siemens parts available now in our warehouse. Most of our automation components ship on the same day and are covered by our two-year service warranty. Contact us to order your Siemens replacement parts today.